Animal groups

Vertebrates
1. Mammals (Mammalia)
2. Birds (Aves)
3. Reptiles (Reptilia)
4. Amphibians (Amphibia)
5. Fish (Pisces)

Invertebrates
1. Cnidarians (Cnidaria)
2. Annelids (Annelidia)
3. Arthropods (Arthropoda)
4. Crustaceans (Crustacea)
5. Insects (Insecta)
6. Echinoderms (Echinodermata)
7. Molluscs (Mollusca)
8. Nematodes (Nematoda)
9. Platyhelminths (Platyhelminthes)
10. Poriferans (Porifera)

An estimated 97% of all species on Earth are invertebrates.

This is a vertebrate, specifically, Aves.

This is an invertebrate, specifically, Cnidaria.